Erratum
After the publication of this article [1] it has come to our attention that the ethical approval receipt number of this study was not included in the article. As such, please note that this study [1] was approved by the Ethics Committee of Osaka City University (receipt no. 27–8-1).
Footnotes
The online version of the original article can be found under doi:10.1186/s12199-017-0658-z
Reference
- 1.Sugimoto, Yokoyama Characteristics of stepfamilies and maternal mental health compared with non-stepfamilies in Japan. Environ Health Prev Med. 2017;22:1. doi: 10.1186/s12199-017-0610-2. [DOI] [PMC free article] [PubMed] [Google Scholar]